Lennox 50P2050 H Series Installation Instructions Manual Download Page 8 | Manualshive

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Summary of Contents for 50P2050 H Series

Page 1: ...R ENTRY EXHAUST FAN WIRING MAKEUP BOX MIXED AIR RETURN AIR OUTDOOR AIR DAMPERS FRESH AIR EXHAUST AIR MIXED AIR OUTDOOR AIR FILTER ACCESS ENERGY RECOV ERY WHEEL RETURN EXHAUST AIR Illustration 1 The ERS enthalpy wheel contains parallel layers of a polymeric material that are impregnated with silica gel desiccant The wheel is located in the entering intake air and exhaust air streams of the ventilat...

Page 2: ...persede local codes in any way Authorities having jurisdiction should be consulted before installation When installed the unit must be electrically wired and grounded in accordance with local codes or in the absence of local codes with the current National Electric Code ANSI NFPA No 70 Check unit for shipping damage Receiving party should contact last carrier immediately if shipping damage is foun...

Page 3: ...r assembly and screws See Figure 6 Figure 7 Figure 5 8 9 10 J298 PAGE 3 6 Disconnect plug P4 from connector J4 7 Install the provided ERS field harness between J4 and P4 by plugging P27 into J4 plugging J27 into P4 harness 8 Plug purple and blue wires from ERS field harness into logic module at SO purple and SO blue 9 Plug field harness P27 into economizer plug J4 See Figure 7 for field wiring Fig...

Page 4: ... Figure 11 6 Lift ERS front end into the platform support rail catching the base pan of ERS 7 Remove the screws placed in the telescoping legs and adjust the legs on the ERS until it is level Replace all four screws in each leg to secure the ERS in the leveled position See Figure 11 Figure 13 10 Check and seal if necessary along the edges where the ERS meets the rooftop unit to ensure there is no ...

Page 5: ...y the customer Refer to Lennox rooftop unit manual for setting Wheel Pivot Adjustment The Electronic Configuration To Order ECTO parameter must be set at ECTO 7 22 10 to indicate ERS is installed In the A55 Integrated Modular Controller II IMC2 Prodigy of the RTU setting is required for the economizer to go to minimum outside air ROOFTOP UNIT WIRING See Field Wiring Diagram 15 All electrical conne...

Page 6: ... temperature falls below a field selectable temperature setting Intake blower operation resumes operation after temperature rises above the adjustable temperature differential The frost threshold is the outdoor temperature at which frost will begin to form on the ERS wheel For energy recovery systems the frost threshold is typically below 10o F Frost threshold is dependent on indoor temperature an...

Page 7: ...very wheel will pivot into the air stream the fresh air blower dampers will close and after a delay the fresh air blower and exhaust air blower will operate SYSTEM CHECK PAGE 7 MAINTENANCE Motor Maintenance All motors use prelubricated sealed bearings no further lubrication is necessary Mechanical Inspection Make visual inspection of dampers linkage assemblies and ERS rotating bearings during rout...

Page 8: ...00 1400 1450 1500 1550 1600 1650 1700 1200 1250 1300 1350 1400 1450 1500 1100 1150 1200 1250 1300 0 0 2 0 4 0 6 0 8 1 1 2 1 4 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 1450 1500 1550 1600 1650 1700 SCFM Equation of line SCFM PD 0 0492647 0 0005721 TABLE 1 PRESSURE DROP in of W C ERS 1200 RPM 1100 RPM 1000 RPM 900 RPM s e i r e S H x 0 5 0 2 P 0 5 ...

Page 9: ...PAGE 9 ...

Page 10: ...PAGE 10 ...

Page 11: ... Phase 50P2050xH23 14 1000 1700 208 230 3 50P2050xH33 14 1000 1700 460 3 50P2050xH43 14 1000 1700 575 3 ERS Layout Clearance 42 Clearance 24 0 4 e c n a r a e l C 48 000 502014414 Roof Curb 012104808 Equipment Support 50P2050xH 58 208 2 093 Lennox Unit Outline ...

Page 12: ...l q Check model number to insure it matches the job requirements q Install field accessories and unit adapter panels as required Follow accessory and unit installation manuals q Verify field wiring including the wiring to any accessories q Check all multi tap transformers to insure they are set to the proper incoming voltage q Verify correct belt tension as well as the belt pulley alignment Tighte...

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